Komori Corporation

Toshihiko Ebina

Hiroyuki Sugiyama

Toshimi Tanaka

Hiromitsu Numauchi

Takeshi Asai

Isao Funabashi

A blanket/plate mounting apparatus includes a leading edge holding unit, trailing edge holding unit, and first drive unit. The leading edge holding unit is movably supported by a cylinder and holds the leading edge of a blanket/plate. The trailing edge holding unit is movably supported by the cylinder and holds the trailing edge of the blanket/plate. The first drive unit moves the leading edge holding unit and the trailing edge holding unit that respectively hold the leading edge and trailing edge of the blanket/plate mounted on the circumferential surface of the cylinder, thus tightening the blanket/plate.

Blanket/plate mounting apparatus having one drive unit for automatically tightening the blanket/plate

A cleaning apparatus for a rotary printing press includes a cleaning blade, a cleaning cloth, and a cleaning unit and air cylinders, or an air cylinder, a guide shift mechanism, and a cleaning cloth travel mechanism. The cleaning blade has a distal end portion which abuts against the circumferential surface of an oscillating roller during a cleaning operation to scrape a waste ink, and a rear surface continuous to the distal end portion to guide the scraped waste ink downward. The cleaning cloth travels during the cleaning operation done by the cleaning blade to collect the waste ink scraped by the cleaning blade. The cleaning unit and air cylinders, or the air cylinder, the guide shift mechanism, and the cleaning cloth travel mechanism bring the cleaning cloth into contact with the rear surface of the cleaning blade, when the distal end portion of the cleaning blade is in contact with the circumferential surface of the oscillating roller, to collect the waste ink on the cleaning blade.

Cleaning apparatus for web offset printing press

A cylinder cleaning apparatus for a printing press includes a cleaning unit, an actuator, another actuator, and a control unit. The cleaning unit is supported by a printing press frame to be movable between a cleaning position where a cleaning web is in contact with a circumferential surface of a cylinder and a retreat position where the cleaning web is separate from the circumferential surface of the cylinder. The cleaning unit has a cleaning cloth supply roll for supplying the cleaning web to the circumferential surface of the cylinder and a cleaning cloth take-up roll for taking up the cleaning web supplied from the cleaning cloth supply roll. The actuator is fixed to the printing press frame to pivot the take-up roll for a predetermined amount, thereby taking up the cleaning web. Another actuator moves the cleaning unit to one of the cleaning position and the retreat position in accordance with whether the cylinder is in a first or second cleaning mode. The control unit controls at least one of the two actuators in accordance with a position of the cleaning unit to set take-up amounts of the cleaning web to be taken up by the take-up roll in the first and second cleaning modes to be substantially equal to each other.

Cylinder cleaning apparatus for printing press

A cylinder cleaning apparatus for a printing press includes a cleaning web take-up roll, a constant amount feed mechanism, a unit throw-on/throw-off actuator and an actuator, and a plate and bolts. The cleaning web take-up roll takes up a cleaning web supplied from a cleaning web supply roll to clean a circumferential surface of a cylinder. The constant amount feed mechanism takes up a constant amount of the cleaning web on the take-up roll regardless of an amount of the cleaning web taken up by the take-up roll. The unit throw-on/throw-off actuator and the actuator drive to rotate the take-up roll in taking up the cleaning web. The plate and bolts adjust a pivot amount of the take-up roll on which the constant amount of the cleaning web is taken up by the constant amount feed mechanism.

A cylinder cleaning apparatus for a printing press includes a cleaning cloth, a plate, and a cylinder and a rod. The cleaning cloth is brought into contact with the circumferential surface of a blanket cylinder to wipe a foreign matter on the circumferential surface of the blanket cylinder. The plate is arranged to oppose the circumferential surface of the blanket cylinder through the cleaning cloth, is deformed in accordance with a radius of curvature of the circumferential surface of the blanket cylinder, and has a reaction force against the circumferential surface of the blanket cylinder. The cylinder and the rod press the plate against the circumferential surface of the blanket cylinder, thereby bringing the cleaning cloth into contact with the circumferential surface of the blanket cylinder at a predetermined contact pressure.

A printing cylinder/roller cleaning apparatus for a printing press includes a brush roll, a cleaning cloth, a nozzle, and a scraping member. The brush roll is pressed against the circumferential surface of a rotating printing cylinder/roller to scrape contamination therefrom. The cleaning cloth is provided below the brush roll and pressed against the circumferential surface of the printing cylinder/roller to wipe scraped contamination. The nozzle has a plurality of spray holes to spray a solvent onto the brush roll. The scraping member is engaged with a lower end of the brush roll to cause a waste liquid attaching to the brush roll to drop onto the cleaning cloth. A method of cleaning the printing cylinder/roller is also provided.

Printing cylinder/roller cleaning apparatus for printing press and

A printing cylinder/roller cleaning apparatus for a printing press includes a cleaning cloth, a take-up shaft, a supply shaft, a ratchet wheel, a lock member, a swing lever, a one-way clutch, and an air cylinder. The cleaning cloth is pressed against a circumferential surface of a rotating printing cylinder/roller. The take-up shaft takes up the cleaning cloth. The supply shaft supplies the cleaning cloth. The ratchet wheel is coaxially mounted on the supply shaft. The lock lever is engaged with the ratchet wheel when the cleaning cloth is not taken up. The swing lever is coaxially mounted on the take-up shaft and rotated to actuate the lock lever, thereby releasing engagement between the ratchet wheel and the lock lever. The one-way clutch connects the take-up shaft with the swing lever only in a direction to take up the cleaning cloth. The air cylinder pivots the swing lever in response to a cleaning operation of the printing cylinder/roller.

Printing cylinder/roller cleaning apparatus for printing press

A printing cylinder/roller cleaning apparatus for a printing press includes a brush roller, a cleaning cloth, and a cam and a roller. The brush roller is pressed against the circumferential surface of a printing cylinder/roller having a gap in a part thereof to scrape contamination therefrom. The cleaning cloth is pressed against the circumferential surface of the printing cylinder/roller to wipe scraped contamination. The cam and roller position the brush roller in a radial direction of the printing cylinder/roller, thereby retreating the brush roller from the gap.

The present invention provides an improved cylinder cleaning mechanism for cleaning the circumference of a cylinder of a printing press. The cylinder cleaning mechanism comprises, as principal components, a cylinder cleaning unit having a pressure blade for pressing a cleaning cloth against the circumference of the cylinder, and a cylinder cleaning unit operating mechanism comprising a fluid-operated actuator for shifting the cylinder cleaning unit between a cleaning position where the cleaning cloth is pressed against the circumference of the cylinder with the pressure blade and a standby position where the cylinder cleaning unit is separated far away from the circumference of the cylinder, and a mechanism for transmitting the action of the fluid-operated actuator to the cylinder cleaning unit. The fluid-operated actuator is used both for shifting the cylinder cleaning unit between the cleaning position and the standby position and for biasing the cylinder cleaning unit toward the circumference of the cylinder so that the cleaning cloth is pressed properly against the circumference of the cylinder with the pressure blade.

Cylinder cleaning mechanism for a printing press

An inker for a printing press is automatically detachable to the press when in a clutch-off position, and automatically connects itself to the press when a clutch-on instruction is received.

Growing community of inventors

Ibaragi, Japan

Toshihiko Ebina